Messages in this thread Patch in this message |  | | Date | Tue, 9 Feb 2021 09:34:10 +0100 | From | Peter Zijlstra <> | Subject | [PATCH] lockdep: Noinstr annotate warn_bogus_irq_restore() |
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Subject: lockdep: Noinstr annotate warn_bogus_irq_restore() From: Peter Zijlstra <peterz@infradead.org> Date: Tue Feb 9 09:30:03 CET 2021
vmlinux.o: warning: objtool: lock_is_held_type()+0x107: call to warn_bogus_irq_restore() leaves .noinstr.text section
As per the general rule that WARNs are allowed to violate noinstr to get out, annotate it away.
Fixes: 997acaf6b4b5 ("lockdep: report broken irq restoration") Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- include/linux/irqflags.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/include/linux/irqflags.h +++ b/include/linux/irqflags.h @@ -153,8 +153,11 @@ do { \ extern void warn_bogus_irq_restore(void); #define raw_check_bogus_irq_restore() \ do { \ - if (unlikely(!arch_irqs_disabled())) \ + if (unlikely(!arch_irqs_disabled())) { \ + instrumentation_begin(); \ warn_bogus_irq_restore(); \ + instrumentation_end(); \ + } \ } while (0) #else #define raw_check_bogus_irq_restore() do { } while (0)
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